&&,&,&&,,&                                          &,,&,,&&,&
,,&&&&,&,&                                          &&,&&,&,&&
&,&,,,&&&&                                          &,&&,&&&&,
&&&&,,&,,,                                          &&&,&&,,,&
,,,,&,&&,,                                          &,,&&,&,,&
&,,,&&&,&,                   RAILS                  ,&,&,&&&,&
,&,,&,,&&&                                          ,&&&&&,,&&
&&&,&&,&,,                                          &&,,,,&,&,
&,,&&,&&&, &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ,,&,,,&&&&
,&,&,&&,,&                                          ,,&&,,&,,,
,&&&&&,&,& &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ,,&,&,&&,,
,&,,,,&&&&                                          ,,&&&&&,&,
,&&,,,&,,,                                          &,&,,,,&&&
&&,&,,&&,, TRAINS  ARE  SO  CONSTRUCTED  THAT  THEY &&&&,,,&,,
&,&&&,&,&, HAVE TO  FOLLOW A SET PATH. THIS PATH IS ,,,,&,,&&,
&&&,,&&&&& CALLED  A  "RAILWAY", WHICH IS COMPRISED &,,,&&,&,&
,,,&,&,,,, OF TWO  METAL RAILS, HENCE ITS NICKNAME. ,&,,&,&&&&
&,,&&&&,,,                                          &&&,&&&,,,
&&,&,,,&,, BECAUSE  THE  LOW  FRICTION  BETWEEN THE &,,&&,,&,,
&,&&&,,&&, WHEELS OF THE  TRAIN AND THE RAIL METAL, &&,&,&,&&,
&&&,,&,&,& THERE ARE LIMITS FOR HOW ACUTE  A  CURVE &,&&&&&&,&
,,,&,&&&&& CAN  BE,  AND EVEN MORE SO  FOR HOW MUCH &&&,,,,,&&
&,,&&&,,,, THE   GROUND  UNDER  THE  RAILS  CAN  BE ,,,&,,,,&,
&&,&,,&,,, SLOPED. THUS A  RAILWAY IS OFTEN NOT LED ,,,&&,,,&&
,,&&&,&&,, ON TOP OF  HILLS, RATHER THROUGH THEM IN &,,&,&,,&,
,,&,,&&,&, TUNNELS   (IF   THEY  ARE   LARGE),   OR ,&,&&&&,&&
&,&&,&,&&&            ARTIFICIAL CHASMS.            &&&&,,,&&,
&&&,&&&&,,                                          &,,,&,,&,&
,,,&&,,,&, THERE  WILL BE  TREES ON THE SIDE OF THE ,&,,&&,&&&
&,,&,&,,&& RAILS, BUT NOT  TOO  CLOSE, OR THEY WILL ,&&,&,&&,,
&&,&&&&,&, BE CUT  DOWN  BY THE  RAILWAY  JANITORS. ,&,&&&&,&,
&,&&,,,&&& THERE  WILL  BE PLAINS,  AND  BODIES  OF ,&&&,,,&&&
,&&,&,,&,,                  WATER.                  &&,,&,,&,,
,&,&&&,&&,                                          ,,&,&&,&&,
,&&&,,&&,& TRAINS GO  BY  DAY AND BY  NIGHT.  ALONG ,,&&&,&&,&
&&,,&,&,&&      THE WAY, THERE IS INFORMATION       &,&,,&&,&&
,,&,&&&&&, SCATTERED, OFTEN PUT ON  TOP  OF  POLES, &&&&,&,&&,
,,&&&,,,,& TO BE INTERPRETED BY THE  TRAIN DRIVERS. &,,,&&&&,&
&,&,,&,,,& DIFFERENT  PARTS  OF  THE  RAILWAY  HAVE ,&,,&,,,&&
,&&&,&&,,&          DIFFERENT SPEED LIMITS.         ,&&,&&,,&,
,&,,&&,&,&                                          &&,&&,&,&&
&&&,&,&&&& SOMETIMES, TRAINS HAVE TO STOP  AND WAIT ,,&&,&&&&,
&,,&&&&,,, FOR SOMETHING TO HAPPEN, FAR AWAY.  THIS ,,&,&&,,,&
,&,&,,,&,, IS SIGNALED  BY  RED  OR  GREEN  LIGHTS. ,,&&&,&,,&
&&&&&,,&&,                                          ,,&,,&&&,&
,,,,,&,&,&                 &&&&&&&&                 &,&&,&,,&&
&,,,,&&&&&                                          ,&&,&&&,&,
&&,,,&,,,, MANY  PEOPLE FOLLOW  THE RAILS BY  FOOT. ,&,&&,,&&&
,,&,,&&,,, OFTEN  THIS  PROVES  TO BE  THE  SHORTER ,&&&,&,&,,
,,&&,&,&,, PATH BETWEEN  TWO  POINTS. HOWEVER  THIS &&,,&&&&&,
,,&,&&&&&, IS  FROWNED  UPON,  AND   VERY  IMPOLITE ,,&,&,,,,&
&,&&&,,,,&        TOWARD THE TRAIN DRIVERS!         &,&&&&,,,&
,&&,,&,,,&                                          ,&&,,,&,,&
&&,&,&&,,&                                          &&,&,,&&,&
,,&&&&,&,&                                          &,&&&,&,&&
&,&,,,&&&&                                          ,&&,,&&&&,
&&&&,,&,,,                                          &&,&,&,,,&
,,,,&,&&,,                                          ,,&&&&&,,&